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Rare earth-doped oxyfluoride near-infrared luminescent glass and preparation method thereof

A technology of oxyfluoride and rare earth doping, which is applied in the field of rare earth doped oxyfluoride near-infrared luminescent glass and its preparation. It can solve the problems of limiting the practical application of materials and the single coverage of near-infrared light, and achieve huge applications. Potential, the effect of simple preparation process

Inactive Publication Date: 2016-05-11
HEBEI GEO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the reported near-infrared light emitted by rare earth dopant ions covers a relatively single band range.
These problems limit the practical application of materials, therefore, it is necessary to further find new suitable matrix materials

Method used

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  • Rare earth-doped oxyfluoride near-infrared luminescent glass and preparation method thereof
  • Rare earth-doped oxyfluoride near-infrared luminescent glass and preparation method thereof
  • Rare earth-doped oxyfluoride near-infrared luminescent glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 5 9

[0048] Accurately weigh each component raw material according to the mole percentage composition of embodiment five to nine glass in table 2, wherein raw material SiO 2 、BaF 2 and ZnF 2 For analytically pure, Er 2 o 3 It is pure 3N5. The raw materials were thoroughly ground and mixed in a mortar, put into a crucible, placed in a muffle furnace, and melted at 1220°C for 1 hour. Pour the molten glass into a preheated mold, anneal at 470°C for 6 hours, and then cool down to room temperature with the furnace. After the prepared glass is cut, ground and polished, the desired sample can be obtained. All samples exhibit near-infrared emission in the range of 1400-1700nm under excitation at 378nm (such as image 3 shown), whose emission center is located at 1533nm, corresponding to Er 3+ of 4 I 13 / 2 → 4 I 15 / 2 transition, and its half-maximum width was measured to be 31nm, 39nm, 44nm, 42nm and 41nm, respectively. It can be seen from the figure that Embodiment 5 presents th...

Embodiment 10 14

[0050] Accurately weigh each component raw material according to the mole percentage composition of embodiment ten to fourteen glass in table 3, wherein raw material SiO 2 、BaF 2 and ZnF 2 Analytical pure, Tm 2 o 3 It is pure 3N5. The raw materials were thoroughly ground and mixed in a mortar, put into a crucible, placed in a muffle furnace, and melted at 1220°C for 1 hour. Pour the molten glass into a preheated mold, anneal at 470°C for 6 hours, and then cool down to room temperature with the furnace. After the prepared glass is cut, ground and polished, the desired sample can be obtained. All samples were excited at 357nm, and their fluorescence spectra in the range of 600-1700nm were measured (such as Figure 5 shown). The results show that Example 10 exhibits the strongest near-infrared emission. In addition, it can be seen from the figure that the samples exhibit fluorescence emission at 660nm, 750nm, 798nm, 1073nm, 1101nm, 1353nm, 1437nm, 1503nm and 1605nm, corre...

Embodiment 15 17

[0052] Accurately weigh each component raw material according to the mole percentage composition of embodiment fifteen to seventeen glass in table 4, wherein raw material SiO 2 、BaF 2 and ZnF 2 Analytical pure, Dy 2 o 3 It is pure 3N5. The raw materials were thoroughly ground and mixed in a mortar, then put into a crucible, placed in a muffle furnace, and melted at 1250°C for 1 hour. Pour the molten glass into a preheated mold, anneal at 500°C for 8 hours, and then cool to room temperature with the furnace. After the prepared glass is cut, ground and polished, the desired sample can be obtained. All samples were excited at 349nm, and their fluorescence spectra in the range of 600-1600nm were measured (such as Figure 6 shown). The results show that Example 15 presents the strongest near-infrared emission. In addition, it can be seen from the figure that the samples exhibit fluorescence emission at 665nm, 754nm, 848nm, 968nm, 1018nm, 1149nm, 1332nm, 1443nm and 1510nm, c...

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Abstract

The invention discloses a rare earth oxyfluoride near-infrared luminescent glass and a preparation method thereof. The glass is composed of the following components: 48.5 to 49.5 mol of SiO2, 20 to 40 mol of BaF2, 10 to 30 mol of ZnF2, 0.5 to 1.5 mol of RE2O3, wherein the RE2O3 represents one or more components selected from Ho2O3, Er2O3, Tm2O3, Dy2O3 and Nd2O3. The preparation method comprises the following steps: mixing the raw materials according to the ratio mentioned above, smelting the raw materials for one hour at a temperature of 1220 to 1250 DEG C; pouring the molten glass into a mould which has been heated in advance, annealing for 6 to 8 hours at a temperature of 470 to 500 DEG C; then cooling the glass in the furnace to the room temperature; and finally cutting, burnishing and polishing the obtained glass so as to obtain the required samples. The products prepared through the preparation method are non-toxic, environment-friendly, and cheap, and are capable of generating near infrared lights in a plurality of wave bands.

Description

technical field [0001] The invention relates to a near-infrared luminescent glass, in particular to a rare earth-doped oxyfluoride near-infrared luminescent glass and a preparation method thereof. Background technique [0002] Rare earth near-infrared luminescent materials have important applications in optical fiber communication, laser systems, bioanalytical sensors, and biomedical imaging, so they have received extensive attention. [0003] Among the rare-earth near-infrared luminescent host materials, luminescent glass has attracted widespread attention because it is easy to make fiber lasers. At present, the matrix materials used in fiber lasers are mostly quartz glass and fluoride glass. Although quartz glass has high chemical stability and thermal stability, its phonon energy is high, so it is difficult to obtain high near-infrared luminous efficiency. Although fluoride glass has low phonon energy and high luminous efficiency, its chemical stability is poor, the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/112C03C4/12
Inventor 冯丽
Owner HEBEI GEO UNIVERSITY
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